EDELSTAHL WITTEN-KREFELD GMBH THYRAPID. Tool steels THYRAPID THYRAPID THYRAPID THYRAPID THYRAPID. High-Speed Steels

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1 EDELSTAHL ITTEN-KREFELD GMBH Tool steels High-Speed Steels

2 3202 ode T 15 r o Heavy-duty, high-speed steel grade with maximum cutting-edge endurance and wear resistance due to its high content. The o content additionally lends it high red hardness and resistance to. Machining of hard materials that wear the cutting edges, e.g. highly quenched and tempered r-ni steel grades and non-ferrous metals, as well as mother-of-pearl, paper, hard rubber, synthetic resins, marble, slate and the like. Ideally suited to turning tools and forming tools of all kinds, finishing tools, heavy-duty milling cutters or automatic lathe tools. Soft annealing Hardening from in a) arm bath 550/Air or The hardening temperatures apply to salt-bath hardening. A reduction of 10 to 30 is recommended for vacuum hardening.

3 3207 ode T 42 r o Extremely high-performance, high-speed steel grade that combines optimum cutting-edge endurance, high-temperature strength and toughness owing to its. Universally suitable for roughing or finishing work where maximum tool life is required, for large-batch automatic lathe work, all kinds of cutting tools and extremely highly stressed milling cutters. Soft annealing max. 300 Hardening from in a) arm bath 550/Air or The hardening temperatures apply to salt-bath hardening. A reduction of 10 to 30 is recommended for vacuum hardening.

4 3243 ode M35 r o This steel grade is also available with a higher S content (S = 0.10%) under the name 3245, M 35 + S, The o content of this tough, high-performance, high-speed steel grade, which offers good cutting-edge endurance, results in high red hardness and resistance to. onsequently, this steel grade is particularly suitable when thermal stresses and discontinuous cutting are involved. Heavy-duty milling cutters of all kinds, highly stressed twist drills and taps, profiled cutting blades, machining of high-strength materials, broaches. Soft annealing Hardening from in a) arm bath 550/Air or The hardening temperatures apply to salt-bath hardening. A reduction of 10 to 30 is recommended for vacuum hardening.

5 3245 ode M 35 + S r o S Tough, high-performance, high-speed steel grade with good cutting-edge endurance, high red hardness and resistance to. Same basic as 3243, but with higher S content to improve cutting properties and suitability for relief-turning. Heavy-duty milling cutters of all kinds, particularly for relief-turned and relief-ground hobs, chasers and segments for circular saws. Machining of high-strength materials. Soft annealing Hardening from in a) arm bath 550/Air or The hardening temperatures apply to salt-bath hardening. A reduction of 10 to 30 is recommended for vacuum hardening.

6 3247 ode M 42 r o High-carbon, high-speed steel grade based on, with high resistance to wear, red hardness and toughness. This steel grade displays good grindability as a result of its low content. Tools subject to severe mechanical wear, e.g. in cases of small cross-section cuts and high cutting speeds. Particularly suitable for die-sinking cutters and one-lip cutters, and for tool bits in automatic lathes. Also suitable for non-cutting applications, e.g. cold extrusion rams, and for tools for machining aircraft materials, such as titanium alloys, etc. Soft annealing Hardening from in a) arm bath 550/Air or The hardening temperatures apply to salt-bath hardening. A reduction of 10 to 30 is recommended for vacuum hardening.

7 3341 ode M 2 + S r S Same basic as 3343, but with a higher S content to improve cutting properties and suitability for relief-turning. Milling cutters of all kinds, particularly relief-turned and relief-ground hobs, chasers and segments for circular saws. Soft annealing Hardening from in a) arm bath 550/Air or The hardening temperatures apply to salt-bath hardening. A reduction of 10 to 30 is recommended for vacuum hardening.

8 3343 ode M r 1.9 This steel grade is also available with an elevated S content (S = 0.12%) under the name Thyrapid Standard high-speed steel grade. High toughness and good cutting power owing to its well-balanced alloy, making it suitable for a wide variety of applications. Physical properties Thermal conductivity /(m K) For all metal-cutting tools for roughing or finishing, such as twist drills, all kinds of milling cutters, screw taps, screw dies, broaches, reamers, countersinks, chasers, segments for circular saws, shaping tools and woodworking tools. Also highly suitable for cold-forming tools, such as cold extrusion rams and dies, as well as for cutting and precision cutting tools, plastics moulds with elevated wear resistance and screws. Soft annealing Hardening Quenching circulaing furnace b) 850 and a) arm bath 550 b) Oil c) Air At least twice ontinuous time-temperature-transformation diagram Temperature in in Austenitising Austenitisierungstemperatur temperature Ac 1e Start Umwandlungsbeginn of transformation 800 Ac 1b End 31 Umwandlungsende of transformation Pearlite Perlitstufe stage Start Beginn of der carbide Karbidausscheidung precipitation Austenite + arbide Karbid Ledeburit + Ledeburite 400 Start Umwandlungsbeginn of transformation 300 = Härtewerte Hardness in 53 50% 200 Zwischenstufe Bainite stage % Martensite Martensitstufe stage 65 80% Zeit Time in in s s Zeit in min Time Zeit in h Hardness in Härte in diagram Anlasstemperatur temperature in in

9 3344 ode M3/2 r Same basic as 3343, but with substantially higher and content. This steel grade thus combines maximum wear resistance, maximum cutting-edge endurance and good toughness. Screw taps, reamers, heavy-duty milling cutters, screw dies, shaper cutters and rotary shaving cutters for machining hard materials, socket-head and round-hole punching dies for manufacturing nuts. Soft annealing Hardening from in a) arm bath 550/Air or The hardening temperatures apply to salt-bath hardening. A reduction of 10 to 30 is recommended for vacuum hardening.